1. Taxaceae (红豆杉科)
2. Taxus (红豆杉属)
3. Taxus cuspidata (东北红豆杉)

学名(拉丁名)	Taxus cuspidata
中文名	东北红豆杉
命名人	S. et Z.
中文科名	红豆杉科
拉丁属名	Taxus
类型	species
拉丁科名	Taxaceae
中文属名	红豆杉属

Taxus baccata Linnaeus subsp. cuspidata (Siebold & Zuccarini) Pilger; T. baccata subsp. cuspidata var. latifolia Pilger; T. baccata var. microcarpa Trautvetter; T. caespitosa Nakai; T. cuspidata var. latifolia (Pilger) Nakai; T. cuspidata var. microcarpa (Trautvetter) Kolesnikov.

Trees to 20 m tall; trunk to 1-1.5 m d.b.h.; bark reddish brown, with shallow fissures; winter bud scales persistent at base of branchlets, overlapping, ridged dorsally, tapered apically. Leafy branchlets "V"-shaped in cross section in living state. Leaves borne at 75-95° to branchlet axis, subsessile; blade dark green and glossy adaxially, linear, almost equally wide throughout length, slightly falcate, 1-2.5(-4) cm × 2.5-3 mm, midvein not papillate abaxially, stomatal bands tawny yellow, 0.6-0.7 mm wide, at least 2 × as wide as marginal bands, marginal bands ca. 0.2 mm wide, base cuneate, ± asymmetric, margin revolute, apex usually shortly mucronate, mucro 0.1-0.3 mm. Pollen cones ovoid or subglobose, ca. 3.5 mm; peduncle 0.5-1 mm; microsporophylls 9-14, each with 5-8 pollen sacs. Aril purplish red when ripe, lustrous. Seed ovoid or trigonous-ovoid, ca. 6 × 4-4.5 mm, distally with 3 or 4 or more obtuse ridges, apex with small, obtuse mucro; hilum usually triangular or quadrangular. Pollination spring, seed maturity autumn.

Acid soils in cold, humid places; 500-1000 m. Heilongjiang, E Jilin, Liaoning, Shaanxi [Japan, Korea, E Russia (Kurile Islands, Primorye, Sakhalin)].

Only var. cuspidata, described here, occurs in China; var. nana Rehder occurs in Japan.

The wood used in building construction, furniture manufacture, and as a carving material. The heartwood yields a red dye, oil is extracted from the seeds, and a compound used to treat diabetes is extracted from the wood, bark, leaves, and roots.

Taxus cuspidata
Family Name:	Taxaceae	Genera name:	Taxus
Species name:	cuspidata	Genera status:
NLR:		Comments: